In a 1 1/2 qt nonstick saucepan, stir together the flour, sage, thyme and pepper. Stir until mixture begins to brown, watching carefully so the flour doesn't burn.,Whisk in the broth and onion flakes, heat to boiling over medium heat, stirring constantly; stir in the vegetables and chicken, bring to a boil.,In a small dish, mix together the biscuit mix, chopped onion and milk until well moistened; drop by rounded teaspoonfuls onto boiling stew; reduce heat to low and simmer uncovered for 10 minutes.,______